Thermistors can also be used as electronic circuit components for instrument line temperature compensation and thermocouple cold end temperature compensation.
March 15, 2023
Thermistors can also be used as electronic circuit components for instrument line temperature compensation and thermocouple cold end temperature compensation. Using the self-heating characteristic of NTC thermistor, automatic gain control can be realized, and the RC oscillator amplitude stabilization circuit, delay circuit and protection circuit are formed. When the self-heating temperature is far greater than the ambient temperature, the resistance value is also related to the heat dissipation conditions of the environment. Therefore, the characteristic of thermistor is often used in the flow meter, flowmeter, gas analyzer and thermal conductivity analysis to make a special detection element. PTC thermistors are mainly used for overheating protection of electrical equipment, contactless relay, constant temperature, automatic gain control, motor start, time delay, automatic degaussing of color TV, fire alarm and temperature compensation.